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Finding the Fourth Proportional to 183.90, 253.98 and 140.52

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Solution

The fourth proportional to 183.90, 253.98 and 140.52 is: 194.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.90 : 253.98 = 140.52 : x
  2. Step 2: Convert to fraction form
    183.90/253.98 = 140.52/x
  3. Step 3: Cross multiply
    183.90x = 253.98 × 140.52
  4. Step 4: Simplify right side
    183.90x = 35,689.27
  5. Step 5: Solve for x
    x = 35,689.27/183.90
  6. Step 6: Final answer
    x = 194.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.